Elisa

A high-end artificial intelligence developed by Lyco. A commander has but to give a simple order and the mainframe "Elisa" will automatically compute a rational course of action to carry it out. This high-spec AI mainframe is equipped with a unit of combat dolls that are directly loyal to her, and she can control them remotely over the internet to carry out her directives. However, Elisa is not a simple AI program. Lyco's ultimate goal was to produce a perfect AI that possessed self-awareness, who could think and feel like a human being. After the "Butterfly Incident", Elisa gained a physical body and took control of all Sangvis Ferri dolls, and in order to avenge her "father" Lyco, she began attacking all the humans she saw and all dolls apart from those belonging to Sangvis Ferri. At the same time, she hopes to become the perfect AI in her father Lyco's heart - that is to say, she wants to become a sapience that is no different from a human being. As a result , she began combing through her father's data to find a specimen of a perfect AI.

(Source: Girls Frontline Wiki)